Url https://edisondigital.rutgers.edu/document/E1518ECK Resource class dctype:Text Title [E1518ECK], Letter from Thomas Alva Edison to William Horatio Mason, May 21st, 1915 Creator Edison, Thomas Alva Subject Production difficulties and adjustments Chemicals, chemical products, and chemical processes Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1915-05-21 Type Letter Identifier E1518ECK Source 261:340 Relation Bacon, John, Jr Rights Thomas Edison National Historical Park Date Created 1915-05-21 Has Version https://archive.org/details/edisonmicrofilm261/page/n350/mode/1up Archive.org Viewer, Microfilm Series Reel 261 Is Part Of E1518E-F Recipient Mason, William Horatio Uri https://edisondigital.rutgers.edu/document/E1518ECK https://edisondigital.rutgers.edu/document/E1518ECK --